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We present the optical to mid-infrared SEDs of 11 debris disk candidates from$Spitzer$ SWIRE fields. All these candidates are selected from SWIRE 24$\mu$msources matched with both the SDSS star catalog and the 2MASS point sourcecatalog. They show an excess in the mid-infrared at 24$\mu$m($K_S$-[24]$_{Vega}$ $\ge$ 0.44) indicating the presence of a circumstellardust disk. The observed optical spectra show that they are all late typemain-sequence stars covering the spectral types of FGKM. Their fractionalluminosities are well above 5$\times10^{-5}$, even up to the high fractionalluminosity of 1$\times10^{-3}$. The high galactic latitudes of SWIRE fieldsindicate that most of these candidates could belong to the oldest stars in thethick disk. Our results indicate that the high fractional luminosity debrisdisks could exist in the old solar-like star systems, though they are now stillquite rare. Their discoveries at high-galactic latitudes will also provide usan excellent opportunity to the further studies of properties and evolution ofthe debris disk in the ISM poor environments.

The Debris Disk Candidates: Eleven 24$\mu$m excess stars in Spitzer SWIRE Fields